Abstract: A drainage control apparatus (10) for basements having a poured concrete floor (27). A plurality of drainage structure (10) each have a vertical leg (15) and a horizontal leg (14), with the vertical leg (15) being positioned proximate to the vertical side wall (11) of the basement and the horizontal leg (14) resting upon the top of the foundation footing (12). The vertical leg (15) includes a plurality of outwardly protruding embossments (20) proximate the bottom end of the vertical leg (15). The vertical leg (15) also includes an outwardly projecting, longitudinal spacer lip (21) proximate the upper end (22) of the vertical leg (15). Both the embossments (20) and spacer lip (21) touch the vertical basement side wall (11) to maintain a gap (26) between the vertical leg (15) and the vertical side wall (11). The horizontal leg (14) of the drainage structure (10) includes a plurality of channels ( 25) to direct water into a drain pipe (18).